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🌎 Location: Greenwich, United Kingdom [change]

Asteroid (NEO) 2020 TH4

Asteroid (NEO) 2020 TH4 is a Near Earth Object. If you've heard news about a potential impact of this asteroid with the Earth, please check out Will Asteroid Asteroid (NEO) 2020 TH4 Impact Earth?.

Asteroid (NEO) 2020 TH4 is currently in the constellation of Cetus. The current Right Ascension of Asteroid (NEO) 2020 TH4 is 02h 44m 35s and the Declination is +01° 01’ 07” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid (NEO) 2020 TH4 is 21.73 (JPL).

Summary of key facts about Asteroid (NEO) 2020 TH4 [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

02h 44m 35s
+01° 01’ 07”
  • 2020 TH4 is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the East-South-East direction at an altitude of 13° above the horizon.
  • Given its current magnitude, 2020 TH4 is visible only through long exposure photography.
  • See also 2020 TH4 rise and set times.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Asteroid (NEO) 2020 TH4 available on TheSkyLive:

Available Resources

Asteroid (NEO) 2020 TH4 Position and Finder Charts

Below we provide Asteroid (NEO) 2020 TH4 finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Asteroid (NEO) 2020 TH4 in Cetus on October, 21 2020
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid (NEO) 2020 TH4 in Cetus on October, 21 2020
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Also check out Where is Asteroid (NEO) 2020 TH4?, a page that provides all the information needed to find Asteroid (NEO) 2020 TH4 in the sky and additional links to sky charts.

Asteroid (NEO) 2020 TH4 Distance from Earth

The distance of Asteroid (NEO) 2020 TH4 from Earth is currently 8,477,436 kilometers, equivalent to 0.056668 Astronomical Units. Light takes 28.2777 seconds to travel from Asteroid (NEO) 2020 TH4 and arrive to us.

28.2777 seconds

The following chart shows the distance of Asteroid (NEO) 2020 TH4 from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Asteroid (NEO) 2020 TH4 from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth.

Closest approach of Asteroid (NEO) 2020 TH4 to Earth

During the next 10 years, the closest approach of Asteroid (NEO) 2020 TH4 to Earth happens on Sun Oct 11 2020 at a distance of 0.034396 Astronomical Units, or 5,145,601 kilometers:

Sun Oct 11 2020

Asteroid (NEO) 2020 TH4 brightness

The current visual magnitude of Asteroid (NEO) 2020 TH4 is 21.73.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid (NEO) 2020 TH4, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Predicted magnitude of Asteroid (NEO) 2020 TH4 between January 2013 and December 2100

Asteroid (NEO) 2020 TH4 rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Asteroid (NEO) 2020 TH4 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 88.8°
Max altitude: 41.1°
Azimuth: 272.1°

The rise and set times are defined as the time at which the upper limb of Asteroid (NEO) 2020 TH4 touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Asteroid (NEO) 2020 TH4 Orbital Elements

The following table lists the orbital elements of Asteroid (NEO) 2020 TH4 at epoch 12 October 2020 00:00 UTC (JD: 2459135.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.36245272
Orbit inclination i 9.33308256°
Perihelion distance q 1.01317151 AU
151,568,302 km
Aphelion distance Q 2.16517009 AU
323,904,836 km
Semi-major axis a 1.58917080 AU
237,736,569 km
Orbital period period 2.0000 years
731.7358 days
Date of perihelion transit Tp 2020-Sep-25 00:28:19
2,459,117.5197 JD
Next perihelion transit 2022-Sep-26 18:07
2,459,849.2555 JD
Argument of perihelion peri 155.14507153222°
Longitude of the ascending node node 204.52235889201°
Mean anomaly M 8.8459778128841°
Mean motion n 0.49198086°/day

Visualization of Asteroid (NEO) 2020 TH4 Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid (NEO) 2020 TH4 with respect of the Sun and the orbits of the major planets. The position of Asteroid (NEO) 2020 TH4 and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Asteroid (NEO) 2020 TH4
View Asteroid (NEO) 2020 TH4 in the 3D Solar System Simulator

Asteroid (NEO) 2020 TH4 15 Days Ephemeris

The following table lists the ephemerides of Asteroid (NEO) 2020 TH4 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid (NEO) 2020 TH4 in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Oct 14 00h 53m 54s +24° 53’ 57” 20.72 Pisces
2020 Oct 15 01h 16m 00s +20° 52’ 06” 20.63 Pisces
2020 Oct 16 01h 35m 08s +17° 01’ 38” 20.59 Pisces
2020 Oct 17 01h 51m 38s +13° 28’ 48” 20.66 Aries
2020 Oct 18 02h 05m 49s +10° 16’ 27” 20.85 Pisces
2020 Oct 19 02h 18m 03s +07° 25’ 09” 21.09 Cetus
2020 Oct 20 02h 28m 39s +04° 53’ 56” 21.33 Cetus
2020 Oct 21 02h 37m 50s +02° 41’ 03” 21.56 Cetus
2020 Oct 22 02h 45m 50s +00° 44’ 33” 21.77 Cetus
2020 Oct 23 02h 52m 50s -00° 57’ 33” 21.97 Cetus
2020 Oct 24 02h 58m 59s -02° 27’ 10” 22.16 Eridanus
2020 Oct 25 03h 04m 24s -03° 45’ 54” 22.33 Eridanus
2020 Oct 26 03h 09m 12s -04° 55’ 11” 22.49 Eridanus
2020 Oct 27 03h 13m 28s -05° 56’ 17” 22.65 Eridanus